I dont know if it is better or worse really.I actually completely forgot that the 2027 Worlds start one month after the Tour and before the Vuelta. The Vuelta could fit in to his 2027 schedule but it likely still heavily depends on whether he’s riding a heavy Classics campaign or not.
It is a month where you would have to keep your form going into the Vuelta after the Tour, rather than a couple of weeks and into it again... which is probably the best way to do it.
The optimal way is likely an easier spring. Train May. Suisse or Dauphine-Tour-Vuelta.
Or do the Giro-Vuelta combo, which doesnt seem likely at the moment.